Race Tracks by Carrera. Details: In addition to four straights with a length of 342 mm and two straights with a length of 114 mm, you also get two lane changes and a bottleneck with this Carrera set. The special highlight is the two fly-over sections. With the fly-over sections, it is now easy for you to manoeuvre your slot car through the next bend after a loop. Be creative and use the expansion set to keep creating new courses that challenge you and your opponents.